of the Town of NeiD-Haven. 89 



Dr. Kennedy, of Edinburgh, analyzed several speci- 

 mens of Scotch Whin. He found the Basalt of Staffa 

 comDOsed of 

 48 silex 



16 argil or pure clay 

 16 oxid of iron 



9 lime J> in every 100 parts. 

 5 moisture and other volatile j 

 matter } 



94 J 



By subsequent experiments he ascertained that there 

 existed also in this stone four parts of soda, and one of 

 muriatic acid. The whin stone of Salisbury Craigy which 

 is most similar to that of the East Rock, gave 

 46 silex 

 19 argil 

 17 oxid of iron 

 8 lime 



4 moisture and other vol. matter [>in every 100 parts. 

 3,5 soda or about that quantity 

 7 muriatic acid 



98,5 



The same distinguished analyist (Dr. Kennedy) exam- 

 ined several other varieties of whin, and found them 

 composed of nearly the same ingredients. 



He analyzed also specimens of lava from Mount Etna, 

 particularly that of Catania, and Sta. Venere Fiedmonte, 

 (vid. Edinb. Trans. Vol. v. part I. page 92) and found 

 the most surprizing coincidence in the nature and pro- 

 portion of their ingredients. It is not proper to demand 

 so much of the time of the Academy as would be requi- 

 site in order to enter into the theories of the earth which 

 at the present day profess to account for the origin of 

 whin stone, as well as of the other masses of our globe : 

 yet, it cannot be well omitted, tliat Europe is now divi- 

 ded between two systems of geology, at the head of owe" of 

 which was the late Dr. Hutton, of Edinburgh ; and of 

 the other, the celebrated mineralogist JFerner, of Fri- 



M 



